1GGTE cam grinds.

[celica77]

Can anyone give me an idea of what cam grinds people have tried with the 1GGTE. I dont want to have to do any major head mods to accept the cams. What have people gone to? whats the biggest that fits. I will be running just a clean cylinder head with performance valve springs and highflow ct12's i was thinking somthing around 220 but not sure as this will be a street car. Any suggestions please let me know. AND WHERE TO GO? southside of bris. all recomondations welcome

[pandaah]

couldnt tell you where to go champ, but i asked a very reputible cam grinder here in perth and they said 272's might be a bit big for the 1g head, yet ivan tigre has 272's but there REALLY expensive..

id recommend getting a engine reconditioner that regrinds cams to do like a 264 grind or around those figures, bit wilder than daily spec if that makes sense.. you can drive fine with them but theyve got abit of a slope on idle that can sometimes make it abit tricky to take off, depends how good of a driver you are

[celica77]

and how much lift you guys recommend?

[Kedderz]

Theres a set of 1ggte hks cams on ebay atm, could be worth the risk if they go cheaply, read his description.

Regrinding of 1g cams is expensive, I contacted the major companies that do it and all said about 900-1400 depending on the grind as its not a standard cam they deal with. Kyle IIRC used stock cams and just a lot of boost to do is 9 second pass and imho, I would recondition the whole engine + do kyles oil mods with gen2 race bearings and just up the boost because you will be paying a metric fk load for custom 1g cams.

[pandaah]

i enquired bout getting some done in perth was gunna be around $700 or maybe a touch more, but i needed a spare 1g head and cams so i couldnt be fucked, tho if anyone is willing to give me a complete head by all means ill organise the company to pick it up from my workshop

[Kedderz]

Personally Id love a set of brand new cams, not regrinds. Sure some people have used them successfully and others have horror stories.

I will have a spare head in the future, gen3.

[white_sandshoe]

One thing which works with other engines, and may or may not apply, is using the NA cams, as they tend to be more agressive than the turbo ones. That is true with 2JZ (or so I've been told) and RB25, but as I said, it may nor may not apply to the 1GGTE

[celica77]

yeah i saw those cams. i dont wanna use crap loads of boost as this is a street car and im running twin high flow ct12s for this set up. I will defs get a regrind i think or try maybe get those ebay ones and have them cleaned up. Kyle reccomended a grind of 220 and like 9mm lift. but just wanted to know what people have tried and had succsess with.

[Kedderz]

NA cams are useless, I have them in mine and it made dick all difference and was just a head ache getting them in.

I say go for what kyle has reccomded, he would know. Also remove TVIS if you havent already done so to stop cly 1-6 leaning out at higher power levels/flow.

[celica77]

is removing the TVIS hard? whats involved havnt pulled it down yet.

[Kedderz]

Easy as pie mate its just sandwiched in between the inlet manifold and the head. Simply unbolt your inlet manifold and remove the TVIS setup and associated lines. You will need new studs/bolts to reattach the inlet manifold as with the TVIS removed the existing studs dont have any thread so tighten the nuts up as you have removed the TVIS which acts as a spacer.

Its a vaccum operated series of butterflies which open an close which help low down torque. Problem is they are only present in cylinders intake runners 2-11 not 1 and 12 which means clyinder 1 and 6 get more air compared to the rest, thus creating the lean condition.

[ddeane]

Whoa. Must question why you would want to remove the TVIS. Adrian is correct as Kyle from 6Boost fame has rightly pointed out that the spindle of the TVIS butterflies intrudes on the flow into 1 and 6. And that in the high boost that he gives his 1ggteu (I think it runs 8s so must be up around 500rwkw) he has experienced lean out on these 2 cylinders causing engine failure. Do a search and have a bit of a read about his monster.

Now I have a reasonably modified 1ggteu in my celica. Depending on boost it runs aound 230-240 rwkw at 16-17 psi and 200 rwkw at 13 psi.

I still have the TVIS. Jake Edwards when he dyno'ed it showed me that it was working and providing better down low power delivery and recommended that I retain it, even if I was to increase power levels over what they are now. Remember I am still at less than half the performance that Kyle has in his motor. I might worry when I was getting over 300 rwkw. Even then, given that the 1ggteu inlet manifold outflows the heads considerably, I would look at duplicating the spindle in 2,3,4 and 5 to balance things rather than just remove it. Remember my car is used for around the roads (occassionly) and track and hill climbs, so low down and even power delivery is important. It would be a non issue if I was using it as a dyno queen or for quarter mile work.

Mr Toyota must have had some good reason for making TVIS part of the package, not only on the 1ggteu but on a number of other engines.

Have a think about the intended use of your car before just removing the TVIS remembering the butterfly does not open until about 4000rpm.


Cheers Craig